(19)

(11)

EP 0 817 894 A1

(12)

(43) Date of publication: 14.01.1998 Bulletin 1998/03 (21) Application number: 96904679.0 (22) Date of filing: 26.02.1996

(51) International Patent Classification (IPC):  E04B 1/ 61( . ) E04B 7/ 22( . ) E04B 1/ 68( . ) E04C 2/ 296( . ) (86) International application number: PCT/BE1996/000021 (87) International publication number: WO 1996/026330 (29.08.1996 Gazette 1996/39)

(84) Designated Contracting States: AT BE CH DE ES FR GB IT LI LU NL (30) Priority: 24.02.1995 BE 19950000166 (71) Applicant: Cospi, Naamloze Vennootschap 1830 Machelen (BE)	(72) Inventor: Germis, Alain 1500 Halle (BE) (74) Representative: Vanderperre, Robert, et al  Bureau Vander Haeghen S.A. Rue Colonel Bourg 108 A 1030 Bruxelles 1030 Bruxelles (BE)